A senior jihadist believed to be behind a deadly bombing at the U.S. embassy in Yemen has been reported killed, the third time his death has been announced.

Said al-Shihri, the second in command of Al Qaeda in the Arabian Peninsula (AQAP), was reportedly killed in an airstrike in Yemen in December, according to a news report by Arabic television network Al Arabiya.

According to the report, the Saudi-born militant died after sustaining severe injuries from a joint U.S.-Yemeni airstrike that targeted his convoy.

The al Arabiya account, based on information from ‘family sources’, said al-Shihri went into a coma and allegedly died soon after.

It is the third time he has been reported killed. In 2009 it was announced that he was killed by an American cruise missile and in September 2012, Yemeni news sites reported he was eliminated by a U.S. drone strike.

Al-Shihri was detained in Guantanamo Bay for six years after being captured in fighting in Afghanistan.